How to build muscle fast?

Hey guys, I wanna build muscle up fast, I would like to know how to build up my biceps, triceps, abdominal muscles and pecs. I have been doing 40 dumbelcurls each arm with 5kg dumbelles. I do tripcep excersises and i bench press 35 kg , I also do a lot of abdominal excersises, but nothing is working for me, ... show more Hey guys, I wanna build muscle up fast, I would like to know how to build up my biceps, triceps, abdominal muscles and pecs. I have been doing 40 dumbelcurls each arm with 5kg dumbelles. I do tripcep excersises and i bench press 35 kg ,

I also do a lot of abdominal excersises, but nothing is working for me,

I am 14 and have been trying for 6 months, please help???
3 answers